Window ventilation device



y 1952 J. RASMUS ETAL WINDOWVENTILATION DEVICE Filed May 10, 1949 INVENTORY EDWARD RAs MUS Jumus RAsMus 5 AHUENEY Patented July 29, 1952 WINDOW VENTILATION DEVICE .lulius Rasmus,.Fldgemere, and Edward Rasmus, Far Rockaway, N. Y., assignors to Case Vent Inc., Brooklyn, N. Y.

Application May 10, 1949, Serial No. 92,394

This invention relates to new and useful improvements in window ventilators, and, more particularly, the aim is to provide a novel and valuable ventilator, characterized by a relatively simple and exceedingly inexpensive construction, and having the advantages of very light weight, full Window width ventilating area, instantaneous and easy variability while in place as to operating action so far as is concerned the amount of outside air at any time admittedand always Without the possibility of drafts and with the same or a greater amount of light transmission as would be afforded through the glazed portion of a window sash when in maximum light transmitting position, and also, so as perfectly to screen out flies and other insects.

As the invention'is preferably carried out, the new ventilator comprises a principal member, preferably molded of Lucite or any other suitable plastic or other material, left clearly transparent or, if desired, given any desired tinting or coloration;' this member shaped to incorporate a central body presenting a chamber having an outwardly extended bottom wall, a sloping outer wall and a pair of like triangular side walls, andalso incorporating a surrounding flange for merely contactingly engaging window structure parts. Said bottom wall, desirably having a large cutout, may act as part ofa framing means for a wire mesh or plastic-strand anti-insect screen, with said screen permanently secured in place on the said principal member.

In combination with said principal member, an adjustable auxiliary member, desirably generally of rectangular area, and preferably, too, made of a plastic or the like, is hingedly or pivotally mounted within said chamber, in such manner that when said auxiliary member, below called the flap, is fully lowered, the screen area is fully covered, and accordingly as saidflap is more or less raised a corresponding greater or lesser degree of ventilation is had. A feature of the invention is, also, thataround the four sides of the flap, or, as. herein shown, around its three swinging sides, the same has a binding, preferably a U-folded binding of rubber, a rubber-composition or the like, for giving a nice yet freely swingably modifiable fit of the flap relative to said chamber and also for acting as a dependable frictionally acting means for holding the flap in any selected angular position of adjustment.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appendg 1 Claim. (c1. 9s-99.1)

the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a partially broken away view showing elevationally a conventional window construction, looking thereat from the inside of a room, and with said window construction, for example, of the double-hung type; and further showing a now favored embodiment of the new ventilator in the window frame following full raising of the lower sliding sash. v

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1, but with the ventilator shown in side elevation.

Fig. 3 is a top plan View of the ventilator as disclosed in Figs. 1 and 2, but being partially broken away and showing the flap raised to about the same angle of lift as seen in Fig. 1 and as indicated in broken lines in Fig. 2.

Fig. 4 is an enlarged horizontal sectional view taken on the line 4-4 of Fig. 2, with certain parts partially broken away the more clearly to show other parts. v

Fig. 5 is a fragmentary sectional detail View taken on the line 55 of Fig. 4.

Referring to the drawing more in detail, the conventional window construction l0 comprises the usual sill I I, hood or cap 12, apron [4, interior finishing stiles l5, transverse stiles l6, and, on each of the latter, the customary blind stop l1, parting strip [8 and stop bead l9; said elements l1, l8 and [9 for establishing the slideways for an upper sash 20 and a lower sash 2|, the bottom rail of which last is designated 22.

The ventilator 23 consists of a main or principal member 24 shaped at its central portion to provide a wedge-shaped upwardly tapered chamber 25 bounded by a bottom wall 26, a sloping outer wall 21, and a pair of like triangular side walls 28. Extended uniplanarly around the open face of the chamber 25, and along the top and the two sides of the member 24, is a flange 29; and. the two lower ends of the vertical stretches of said flange merge into an inwardly extended strip-like prolongation of the bottom wall 26 constituting a flange portion 30 for lay-over relative to the top of hood or cap 12. Integral with this flange portion 30 is a depending lip 3| for flatwise contact with the side of the hood or cap I2 facing the inside of the room.

The main member 24 will be provided in widths corresponding to standard widths of window frames, but desirably only of a single height, about that indicated in the drawing, for the usual 3 double-hung type of window construction. With, then, the lower sash raised as indicated, and the ventilator inserted into the opening thereby provided and from the inside of the room, the ventilator may be arranged as illustrated, that is, with the parts 30 and 3| thereof placed as above described, and with the flange 29 at its vertical stretches close against the stop beads l9 and with its top horizontal stretch close and flat against the bottom rail 22 of the raised lower sash. Now, much of the window frame which ordinarily would be open to drafts and incoming insects and horizontally travelling wind-borne dust, is fully closed by the said main member 24 of the ventilator.

The bottom wall 26 of said main member is largely cut away, to provide an opening 32 nearly as great as the area of said wall. A screen 33,

preferably a plastic screen, is secured over this opening in any convenient way; the means shown herein for such securement being a rectangular clamp-frame member 34, which may be made of a plastic or of any suitable material and also in any suitable way secured in place.

The aforesaid angularly adjustable flap, this, too, as already stated, desirably of a plastic, and clearly transparent or tinted or colored as desired, is designated 35. Said flap, at points at the opposite ends of its long edge facing the inside of the room, is suitabl hingedly or pivotally connected to the main member 24 at the side walls 28 thereof; a practicable such hinging means being indicated as consisting of a pair of aligned pivot pins or studs 35 each at one end portion suitably embedded in the flap and at its other end portion journalled in an aperture through a side wall 28.

The flap 35, at about the location shown or in any other suitable location, carries a handle 37; which may be of (plastic, and, indeed, preferably integral with the flap, as by being molded into place when the flap is molded.

The flap 35 has marginally added thereto a U-folded rubber or rubber composition binding 38, secured thereto in any convenient way, as by the use of an adhesive of one of the various kinds suitable for bonding together a rubber or rubber composition and a plastic. As shown, said binding extends around the three swinging sides of the flap, but it could extend all around the perimeter of the flap; and this last might be most desirable, since in that case, when the flap is fully lowered, to close the opening 32, there would be a substantially air-tight closure of said opening effective all around the perimeter of the flap.

Any equivalent of rubber or a rubber composition could be used for said bindingor equivalent; keeping in mind the aforesaid friction-hold function of such binding or equivalent. I

As by now it should be clear, with the ventilator in place as described, all operating advantages already mentioned are afforded; and, among other things, with the flap '35 fully lowered, no wind or even rain water may enter the room, yet when the flap is raised, full air ingress is permitted with prevention of drafts and this due to the upward outward inclination of the bottom wall 26, and, further, the exact extent of ventilation desired may be nicely arranged for by swinging the flap 35 to precisely any angular adjustment thereof selected.

While we have illustrated and described the preferred embodiment of our invention, it is to be understood that we do not limit ourselves to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claim.

Having thus described our invention, what we claim as new, and desire to secure by United States Letters Patent is:

A window ventilator comprising a principal member having a main portion for being fitt'ed into a window opening, said main portion shaped to provide a chamber cavitated away from the inside of the room and having a bottom wall formed with an opening, a pair of triangular side walls and a downwardly outwardly sloping outer wall, said principal member further having marginally thereof integral flange means for lying fiatwisely against but merely contactingly in engagement with structural parts of the window adjacent to said opening, a screen extended across said bottom wall opening, a flap member movably contained in said chamber for movement to cover said screened opening, to uncover said screened opening and to be variously displaced from said screened opening to modify the rate of air flow through the ventilator, said chamber being arranged on said principal member so that when the ventilator is fully in the window opening, said bottom wall is upwardly and outwardly inclined, means pivotally connecting said flap to said principal member along a line of pivoting parallel with and adjacent to the side of said bottom wall facing toward the inside of the room to be pivoted toward the room in a direction away from said screen, and binding material about the marginal edges of said flap, to act frictionally relative to at least one of said side walls for dependably holding said flap in any adjusted angular pivoted position relative to the screen, said binding material being U-shaped in cross-section and engaged in position over all edges of said flap member to rest on the inner face of said bottom wall in the closed position of said flap member sealing the contacting surfaces of said flap member and said bottom wall.

JULIUS RASMUS. EDWARD RASMUS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 94,462 Cowl Aug. 31, 1869 660,510 Heptinstall Oct. 23, 1900 1,078,453 Moon Nov. 11, 1913 1,609,409- Hubbard Dec. 7, 1926 2,247,947 Henderson July 1, 1941 2,389,509 Hellman Nov. 20, 1945 2,398,762 Amiot Apr. 23, 1946 

